hoffman



* (lvo Model.) 2 Sheets-Sheet 1. W. M. HOFFMAN.

FLBSHING AND UNHAIRING MACHINE. No. 335,197. P Patented Peb. 2, 1886. Fig. 1. f

Witnesses X t nven or.

my @4W /m. fw@

(No Medel.) 2 sheets-sheet 2.

Y W. M. HOFFMAN.

PLESHING AND UNHAIRING MACHINE.. No. 335,197. Petented Feb. 2, 1886.

EYERS. Phmemmegrzpner. Mmmm@ 11C,

` ihvrrn STATES VILLAM M. HOFFMA, OF BUFFALO,

Arent Errea.

NINV YORK, ASSIGNOR TO FARRAR Si TRFFTS, OF SAME PLACE.

:PECFEATION 'forming part of Letters Patent NQ 335,197, dated February 2, 1886.

Application filed August 15, 1885.

To all whom t may concern,.-

Be it known that I, WrLLIAM M. HOFFMAN, a citizen of the United States, residing in But'4 falo, in the county of Erie and State of New York, have invented certain new and useful lmprovements in Flcshing and Unhairing Machines, ol." which the following is a specification. The object of this invention is to provide a convenient means l'or removing the flesh, dirt, Io and hair from hides and skins, and its construction and operati ou will be fully and clearly hereinafter described, shown, and claimed, reference being had to the accompanying drawings'7 in which- Figure l is a side elevation. Fig. 2 is a vertical central section through line X X, Fig. Fig. 3 is a front elevation of the machine complete, except the rst roller, which is left off so as to show the endless belt or apron. Fig. 4; represents a plan or top view of the machine, a portion of the iieshing and spreading cylinders being broken away, so as to expose the endless belt or apron below them.

In said drawings, c represents the frame of the machine. It is made of cast-iron, as the best, strongest, and cheapest material, and is provided at the top with boxes a', to receive the shaft a2, upon which is secured the arms c3 c4, for carrying the spreading and fleshing cylinders. They are mounted so that the shaft may turn freely without moving the arms. The arms a3, which are bent (see Fig. 4) so that the spreading and iieshing cylinders may be of the same length, are provided with boxes a5, in which is mounted the spreadingeylinder b, having spiral brass blades b rigidly secured to it in any well-known way. These blades are provided with dull edges and run diagonally around the cylinder from the center toward the ends, so as to adapt them for spreading and smoothing the skin preparatory to its being operated on by the leshingcylinder bt. The ileshing-cylinder is mounted in bearings b3 in the arms (1*, and is provided with spirally-arranged steel blades bl, having sharp edges, so as to adapt it to take off the small pieces of flesh or other matter adhering to the skin or hide. An endless apron or belt, Z, is secured on the rollers b5 bG. These rollers are mounted in boxes in the frame. The

roller b5 works in the sliding box c, and the Serial No.17lpl60. (Xo model.)

endless apron can be tightened up by the setscrew d. The front roller, el, is also arranged in a sliding box, c", (see Fig. 1,) and can be adjusted toward the roller Zi by the set-screws c". These two rollers b5 and'cl act as feedrollers, and are geared together by the pinions ci c. (See Fig. 2.) They receive their motion by an endless chain, d, and pulley Z/ on the driving-shaft d.

d is the ilriviug-pulley on the main shaft al'.

The spreading and Iieshing rollers receive their rotary movements by toothed gearing, as follows: The large gear-wheel d" is mounted on the driving-shaft (t2, and gears into the pinions di d, which pinions are rigidly secured to the spreading and fleshing cylinders. This construction moves both cylinders in the same direction.

The endless apron or belt receives its motion as follows: The pinion d? is secured to the main drivingshaft a and gears into the spurwheel c. This spurwheel c is provided with a pinion, e', and both'are secured by a pin to abracket, et. Thepinion e gears into the spurwheel e3, which is secured to the shaft cl2. By this construction the motion of the shaft d2 is slowed down, so as to give the proper movement to the endless apron aud feed-rollers. The spreading-cylinder b is `provided with a foot-step, f, secured on the shaft f. To the foot-step is jointed a rod, fi-one near each side of the machine. The upper ends of these rods are jointed to the arms a by pins f". (See Fig. 2.) The opposite end of the arms j, to which the foot-step is attached, is provided with a counter-weight, f5, so that when the pressure on the foot-step is taken off it will be raised u p, and also the spreading-cylinder. The iieshinglcylinder is also provided with a foot-step, g, having rods g jointed thereto by pins 02, and to the arms a" byjoints g3, and to the rods is connected a swivel, g, so that their length may be varied, or so that the foot-step may be adjusted to come down to the right point and give the exact pressure required of the cylinder on the skin or hide, whether the pressure of the foot varies or not.

Vhen unhairing a skin, all that is necessary to do is to have the leshing-roller up, and

consequently out of action.

The operation of the machine is as follows:

The skin is fed in from the front of the inachine in the direction of the arrow n and passes under the spreading-cylinder7 (which has been brought doWn onto it by the foot-step,) Where it is stretched and smoothed out preparatory to its passage under the iieshing-cylinder. From the spreading-cylinder it passes along over the endless apron or belt and under the iieshing-eylinder, then dowirbetween the feedrollers c2 b5. As soon as it reaches the feedrollers, the iieshing-cylinder is brought down n pon it by a pressure on the foot-step, which then removes the pieces of iiesh or other matter as the skin passes under it. At this point one-half of the skin has been operated upon and completed, and it is taken and reversed VM. M. HOFFMAN.

Vitnesses:

J ENNIE M. CALDWELL, JAMES SANGSTER. 

